:root {
            --primary-color: #1a73e8;
            --secondary-color: #0d47a1;
            --accent-color: #4fc3f7;
            --light-color: #f8f9fa;
            --dark-color: #1a237e;
            --gradient-start: #1a73e8;
            --gradient-end: #0d47a1;
            --glass-bg: rgba(255, 255, 255, 0.1);
            --glass-border: rgba(255, 255, 255, 0.2);
        }
 .about-hero {
    /* background: linear-gradient(135deg, 
        rgba(26, 115, 232, 0.85) 0%, 
        rgba(13, 71, 161, 0.8) 50%,
        rgba(26, 115, 232, 0.7) 100%),
        url('https://images.unsplash.com/photo-1588776814546-1ffcf47267a5?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1167&q=80'); */
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path fill="rgba(255,255,255,0.05)" d="M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z" opacity=".25" class="shape-fill"></path></svg>');
    background-size: cover;
    animation: float 6s ease-in-out infinite;
}

.about-hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100px;
    background: linear-gradient(transparent, rgba(255, 255, 255, 0.1));
    clip-path: polygon(0 100%, 100% 100%, 100% 0, 0 100%);
}

.about-hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

.about-hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 25px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
    background: linear-gradient(45deg, #ffffff, #e3f2fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
}

.about-hero h1::after {
    content: '';
    position: absolute;
    bottom: -10px;
    right: 50%;
    transform: translateX(50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(45deg, var(--accent-color), #ffffff);
    border-radius: 2px;
    box-shadow: 0 2px 10px rgba(0, 229, 255, 0.5);
}

.about-hero p {
    font-size: 1.3rem;
    line-height: 1.8;
    margin: 0 auto 35px;
    max-width: 600px;
    opacity: 0.95;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
    font-weight: 400;
}
/* Breadcrumb بهبود یافته */
.breadcrumb {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border-radius: 50px;
    padding: 12px 30px;
    display: inline-flex;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.breadcrumb::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.breadcrumb:hover::before {
    transform: translateX(100%);
}

.breadcrumb-item a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
}

.breadcrumb-item a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

.breadcrumb-item.active {
    color: var(--accent-color);
    font-weight: 600;
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.6);
    font-weight: bold;
    margin: 0 15px;
}
.breadcrumb-item+.breadcrumb-item::before {
    float: right;
    padding-right: var(--bs-breadcrumb-item-padding-x);
}
 /* استایل‌های بخش گالری */
        .gallery-main {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
            color: var(--secondary-color);
            font-weight: 700;
            position: relative;
        }
        
        .section-title:after {
            content: '';
            display: block;
            width: 80px;
            height: 3px;
            background: var(--accent-color);
            margin: 15px auto;
            border-radius: 2px;
        }
        
        .gallery-filter {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }
        
        .filter-btn {
            background: white;
            border: 1px solid #ddd;
            padding: 10px 25px;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 500;
            font-size: 1rem;
        }
        
        .filter-btn:hover, .filter-btn.active {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 25px;
            margin-bottom: 50px;
        }
        
        .gallery-item {
            position: relative;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s, box-shadow 0.3s;
            background: white;
            cursor: pointer;
        }
        
        .gallery-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        
        .gallery-img {
            width: 100%;
            height: 250px;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .gallery-item:hover .gallery-img {
            transform: scale(1.05);
        }
        
        .gallery-overlays {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 20px;
            opacity: 0;
            transition: opacity 0.3s;
        }
        
        .gallery-item:hover .gallery-overlays {
            opacity: 1;
        }
        
        .gallery-category {
            color: var(--accent-color);
            font-size: 0.9rem;
            margin-bottom: 5px;
            font-weight: 500;
        }
        
        .gallery-title {
            color: white;
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        
        .gallery-actions {
            display: flex;
            gap: 10px;
        }
        
        .gallery-action {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.2);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            transition: background 0.3s;
            backdrop-filter: blur(5px);
        }
        
        .gallery-action:hover {
            background: var(--accent-color);
            color: white;
        }
        
        /* استایل‌های مدال */
        .modal-content {
            border-radius: 15px;
            overflow: hidden;
            border: none;
        }
        
        .modal-header {
            border-bottom: 1px solid #eee;
            padding: 15px 20px;
            background: var(--light-color);
        }
        
        .modal-body {
            padding: 0;
            position: relative;
        }
        
        .modal-img {
            width: 100%;
            max-height: 70vh;
            object-fit: contain;
        }
        
        .modal-footer {
            border-top: 1px solid #eee;
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .image-info {
            flex: 1;
        }
        
        .image-title {
            font-weight: 600;
            color: var(--secondary-color);
            margin-bottom: 5px;
        }
        
        .image-category {
            color: #666;
            font-size: 0.9rem;
        }
        
        .modal-nav {
            display: flex;
            gap: 10px;
        }
        
        .nav-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-color);
            color: white;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.3s;
        }
        
        .nav-btn:hover {
            background: var(--secondary-color);
        }
        
        .nav-btn:disabled {
            background: #ccc;
            cursor: not-allowed;
        }
        
        /* فلش‌های ناوبری در مدال */
        .modal-nav-arrows {
            position: absolute;
            top: 50%;
            width: 100%;
            display: flex;
            justify-content: space-between;
            padding: 0 20px;
            transform: translateY(-50%);
            pointer-events: none;
        }
        
        .nav-arrow {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary-color);
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            transition: all 0.3s;
            pointer-events: all;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        
        .nav-arrow:hover {
            background: var(--primary-color);
            color: white;
            transform: scale(1.1);
        }
        
        .nav-arrow:disabled {
            background: rgba(255, 255, 255, 0.5);
            color: #999;
            cursor: not-allowed;
            transform: none;
        }
         /* استایل‌های ریسپانسیو */
        @media (max-width: 768px) {
            .top-bar-content {
                flex-direction: column;
                gap: 10px;
            }
            
            .contact-info {
                flex-direction: column;
                gap: 5px;
                text-align: center;
            }
            
            .gallery-hero {
                padding: 80px 0 40px;
            }
            
            .gallery-hero h1 {
                font-size: 2rem;
            }
            
            .gallery-grid {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            }
            
            .gallery-filter {
                flex-direction: column;
                align-items: center;
            }
            
            .filter-btn {
                width: 200px;
                text-align: center;
            }
            
            .search-input {
                width: 150px;
            }
            
            .modal-footer {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }
            
            .modal-nav {
                justify-content: center;
            }
            
            .nav-arrow {
                width: 40px;
                height: 40px;
                font-size: 1.2rem;
            }
            
            .modal-nav-arrows {
                padding: 0 10px;
            }
        }
 /* استایل‌های بخش گالری ویدیو */
        .videos-main {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
            color: var(--secondary-color);
            font-weight: 700;
            position: relative;
        }
        
        .section-title:after {
            content: '';
            display: block;
            width: 80px;
            height: 3px;
            background: var(--accent-color);
            margin: 15px auto;
            border-radius: 2px;
        }
        
        .videos-filter {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }
        
        .filter-btn {
            background: white;
            border: 1px solid #ddd;
            padding: 10px 25px;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 500;
            font-size: 1rem;
        }
        
        .filter-btn:hover, .filter-btn.active {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        
        .videos-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }
        
        .video-card {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s, box-shadow 0.3s;
            cursor: pointer;
        }
        
        .video-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }
        
        .video-thumbnail {
            position: relative;
            height: 220px;
            overflow: hidden;
        }
        
        .video-thumbnail img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .video-card:hover .video-thumbnail img {
            transform: scale(1.05);
        }
        
        .video-play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 70px;
            height: 70px;
            background: rgba(255, 255, 255, 0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 2rem;
            transition: all 0.3s;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        
        .video-card:hover .video-play-btn {
            background: var(--primary-color);
            color: white;
            transform: translate(-50%, -50%) scale(1.1);
        }
        
        .video-duration {
            position: absolute;
            bottom: 15px;
            left: 15px;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 5px 10px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        
        .video-content {
            padding: 25px;
        }
        
        .video-category {
            color: var(--accent-color);
            font-size: 0.9rem;
            margin-bottom: 8px;
            font-weight: 500;
        }
        
        .video-title {
            color: var(--secondary-color);
            font-weight: 700;
            margin-bottom: 12px;
            font-size: 1.3rem;
            line-height: 1.4;
        }
        
        .video-description {
            color: #666;
            line-height: 1.6;
            margin-bottom: 15px;
            font-size: 0.95rem;
        }
        
        .video-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid #eee;
        }
        
        .video-views, .video-date {
            color: #888;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        /* استایل‌های مدال ویدیو */
        .video-modal .modal-content {
            border-radius: 15px;
            overflow: hidden;
            border: none;
        }
        
        .video-modal .modal-header {
            border-bottom: 1px solid #eee;
            padding: 15px 20px;
            background: var(--light-color);
        }
        
        .video-modal .modal-body {
            padding: 0;
        }
        
        .video-player {
            width: 100%;
            height: 400px;
            background: #000;
        }
        
        .video-modal .modal-footer {
            border-top: 1px solid #eee;
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .video-info {
            flex: 1;
        }
        
        .modal-video-title {
            font-weight: 600;
            color: var(--secondary-color);
            margin-bottom: 5px;
            font-size: 1.2rem;
        }
        
        .modal-video-category {
            color: #666;
            font-size: 0.9rem;
        }
        
        .video-actions {
            display: flex;
            gap: 10px;
        }
        
        .video-action-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--light-color);
            color: var(--primary-color);
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
        }
        
        .video-action-btn:hover {
            background: var(--primary-color);
            color: white;
        }
        
        /* استایل‌های پلیر ویدیو */
        .custom-video-player {
            width: 100%;
            height: 100%;
            position: relative;
        }
        
        .custom-video-player video {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .video-controls {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(0,0,0,0.7));
            padding: 20px;
            display: flex;
            align-items: center;
            gap: 15px;
            opacity: 0;
            transition: opacity 0.3s;
        }
        
        .custom-video-player:hover .video-controls {
            opacity: 1;
        }
        
        .play-pause-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-color);
            color: white;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        
        .progress-bar {
            flex: 1;
            height: 6px;
            background: rgba(255,255,255,0.3);
            border-radius: 3px;
            position: relative;
            cursor: pointer;
        }
        
        .progress {
            position: absolute;
            top: 0;
            left: 0;
            height: 100%;
            background: var(--accent-color);
            border-radius: 3px;
            width: 0%;
        }
        
        .time-display {
            color: white;
            font-size: 0.9rem;
            min-width: 100px;
        }
        
        .volume-control {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .volume-btn {
            background: none;
            border: none;
            color: white;
            font-size: 1.2rem;
        }
        
        .volume-slider {
            width: 80px;
            height: 4px;
            background: rgba(255,255,255,0.3);
            border-radius: 2px;
            position: relative;
            cursor: pointer;
        }
        
        .volume-level {
            position: absolute;
            top: 0;
            left: 0;
            height: 100%;
            background: white;
            border-radius: 2px;
            width: 80%;
        }
        
        .fullscreen-btn {
            background: none;
            border: none;
            color: white;
            font-size: 1.2rem;
        }
        /* استایل‌های ریسپانسیو */
        @media (max-width: 768px) {
            .top-bar-content {
                flex-direction: column;
                gap: 10px;
            }
            
            .contact-info {
                flex-direction: column;
                gap: 5px;
                text-align: center;
            }
            
            .videos-hero {
                padding: 80px 0 40px;
            }
            
            .videos-hero h1 {
                font-size: 2rem;
            }
            
            .videos-grid {
                grid-template-columns: 1fr;
            }
            
            .videos-filter {
                flex-direction: column;
                align-items: center;
            }
            
            .filter-btn {
                width: 200px;
                text-align: center;
            }
            
            .search-input {
                width: 150px;
            }
            
            .video-player {
                height: 250px;
            }
            
            .video-modal .modal-footer {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }
            
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .video-controls {
                padding: 10px;
                gap: 10px;
            }
            
            .time-display {
                min-width: 80px;
                font-size: 0.8rem;
            }
            
            .volume-slider {
                width: 60px;
            }
        }
        
        @media (max-width: 576px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            
            .video-controls {
                flex-wrap: wrap;
            }
            
            .progress-bar {
                order: 1;
                width: 100%;
                margin-top: 10px;
            }
        }
         /* استایل embed ویدیو */
    .embed-video-player {
        width: 100%;
        min-height: 400px;
    }
    
    .embed-container {
        width: 100%;
        height: 400px;
        position: relative;
    }
    
    .embed-container > div {
        width: 100% !important;
        height: 100% !important;
    }
    
    .custom-video-player {
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
        background: #000;
        border-radius: 8px;
        overflow: hidden;
        min-height: 400px;
    }
    
    .custom-video-player video {
        width: 100%;
        height: auto;
        max-height: 500px;
    }
    
    /* تنظیمات responsive */
    @media (max-width: 768px) {
        .embed-container,
        .embed-video-player,
        .custom-video-player {
            height: 300px;
            min-height: 300px;
        }
    }
    
    @media (max-width: 576px) {
        .embed-container,
        .embed-video-player,
        .custom-video-player {
            height: 250px;
            min-height: 250px;
        }
    }
    
    .alert {
        padding: 20px;
        text-align: center;
        border-radius: 8px;
        margin: 0;
        min-height: 200px;
        display: flex;
        align-items: center;
        justify-content: center;
    }